CN103361450A - Far infrared ray radioactive material and method for producing the same - Google Patents
Far infrared ray radioactive material and method for producing the same Download PDFInfo
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- CN103361450A CN103361450A CN2012101992240A CN201210199224A CN103361450A CN 103361450 A CN103361450 A CN 103361450A CN 2012101992240 A CN2012101992240 A CN 2012101992240A CN 201210199224 A CN201210199224 A CN 201210199224A CN 103361450 A CN103361450 A CN 103361450A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000012857 radioactive material Substances 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 96
- 239000010959 steel Substances 0.000 claims abstract description 96
- 239000002893 slag Substances 0.000 claims abstract description 95
- 239000000654 additive Substances 0.000 claims abstract description 39
- 238000007664 blowing Methods 0.000 claims abstract description 38
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000012159 carrier gas Substances 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 62
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 41
- 230000000996 additive effect Effects 0.000 claims description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 239000000292 calcium oxide Substances 0.000 claims description 27
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 27
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 27
- 239000000395 magnesium oxide Substances 0.000 claims description 19
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 15
- 239000004576 sand Substances 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 11
- -1 silicate compound Chemical class 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 6
- 239000002210 silicon-based material Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000010922 glass waste Substances 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 33
- 235000012245 magnesium oxide Nutrition 0.000 description 18
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 12
- 235000011941 Tilia x europaea Nutrition 0.000 description 12
- 239000004571 lime Substances 0.000 description 12
- 238000012545 processing Methods 0.000 description 12
- 239000011575 calcium Substances 0.000 description 10
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 238000009628 steelmaking Methods 0.000 description 7
- 229910004283 SiO 4 Inorganic materials 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000013558 reference substance Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 229910052595 hematite Inorganic materials 0.000 description 4
- 239000011019 hematite Substances 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000006063 cullet Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004876 x-ray fluorescence Methods 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a far infrared radioactive material and a manufacturing method thereof, which directly uses oxygen-containing carrier gas to blow additives into high-temperature molten steel slag and stir after collecting a large amount of molten steel slag outside a converter, so as to carry out modification blowing step in a short time, thereby forming polycrystalline phase silicate and ferrite compounds with far infrared radioactivity.
Description
Technical field
The invention relates to a kind of far infrared radioactivity material and manufacture method thereof, and particularly relevant for a kind of far infrared radioactivity material and manufacture method thereof with the molten steel slag modification.
Background technology
The steel-making processing procedure is a link important in the modern industry.Can produce raw material indispensable in the various industry or utensil by the steel-making processing procedure.Yet iron and steel raw material contains a large amount of impurity, behind steel-making processing procedure adding slag former and fusing assistant, forms a large amount of steel slags.
Be to process this a little steel slags by the method for burying in early days, yet as time goes by, the steel slag of burying contains the free state calcium oxide, cause derivative volumetric expansion and pH value rising problem.Modern age is along with the development of industrial technology; the steel slag is through processing again; after the processing such as stabilization, shrend, wind granulation; can be applied to many-side; comprise material of construction (for example mix being applied to laying road with pitch, or be applied to concrete with cement mixing), steel-making processing procedure (such as smelting flux), microcrystal glass material, Anode of lithium cell material, water conditioner etc.
Yet still there is following problem in the processing processing procedure of above-mentioned steel slag.For example, carry out the steel slag after slag making is smelted in converter, its basicity significantly reduces, and will cause heavy corrosion to converter lining refractory brick.Secondly, if the molten steel slag forms cold slag after cooling, must reheat just and can be further processed, quite again not environmental protection of power consumption.Moreover the molten steel slag contains the free state calcium oxide, and when using the steel slag, the contained free state calcium oxide of steel slag easily produces the problem of hydration swelling in the future.The application cases such as CN101638708A number and CN1302338A number of more than can considering TaiWan, China patent announcement number I225098 patent, China Patent Publication No. in light of actual conditions.
Comprehensive speech, the method cost of known steel slag modification is high, the treatment time is long and power consumption, and the less stable of the steel slag after processing, in case after the aqueous vapor in suction or the ingress of air, easily various volumes bursts apart or pH value rising problem because hydration swelling derives, and then the scope of restriction steel slag recycling.
Summary of the invention
Therefore, need the treatment process that a kind of steel slag is provided badly, to process the defective of steel slag in the thorough solution known technology, promote its industry applications, increase its economic worth.
Therefore, one aspect of the present invention is to provide a kind of manufacture method of far infrared radioactivity material, it is collect a large amount of molten steel slags outside converter after, directly the additive utilization is contained in the molten steel slag that the oxygen carrier gas is blown into high temperature and stir simultaneously, within the short period of time, to carry out upgrading blowing step, form by this polycrystalline phase silicate and the wustite material with far infrared radioactivity.
Secondly, another aspect of the present invention is to provide a kind of far infrared radioactivity material, and it is to utilize aforesaid method obtained, and the average far infrared emission rate of the polycrystalline phase silicate of gained and wustite material is 75 per-cent to 90 per-cents.
According to above-mentioned aspect of the present invention, a kind of manufacture method of far infrared radioactivity material is proposed.In one embodiment, the manufacture method of this far infrared radioactivity material is after collecting first the receipts step, directly carries out upgrading blowing step.
In the above-described embodiments, above-mentionedly collect that to receive step be to collect the molten steel slag outside converter, wherein this molten steel slag comprises free state calcium oxide (free CaO), free state magnesium oxide (free MgO), silicate (silicate) compound and wustite (ferrite) compounds etc. at least.
In the above-described embodiments, above-mentioned upgrading blowing step then contains the additive utilization oxygen carrier gas and is blown in the high-temperature fusion steel slag, mixes simultaneously additive and molten steel slag 10 minutes to 60 minutes, to form the far infrared radioactivity material.In an illustration, above-mentioned additive is comprised of earth silicon material, and is 100 weight percents based on the molten steel slag, and the usage quantity of above-mentioned additive is 10 weight percent to 30 weight percents.The far infrared radioactivity material of gained is polycrystalline phase silicate and wustite compound thus, and wherein this polycrystalline phase silicate material comprises magnetite (Fe at least
2O
3) etc. ferrous acid salt but do not have free state calcium oxide and magnesium oxide, and the average far infrared emission rate of this polycrystalline phase silicate material is 75 per-cent to 90 per-cents.
According to one embodiment of the invention, the above-mentioned oxygen carrier gas that contains is air, oxygen or above-mentioned combination.
According to one embodiment of the invention, above-mentioned earth silicon material is flying dust, glass waste, useless potter's clay, useless casting sand, sandblast waste material, high hearthstone or raw material silica sand.
According to a further aspect in the invention, propose a kind of far infrared radioactivity material, it is to utilize the manufacture method of above-mentioned far infrared radioactivity material obtained.
Use far infrared radioactivity material of the present invention and method thereof, it is collect a large amount of molten steel slags outside converter after, directly the additive utilization is contained in the molten steel slag that the oxygen carrier gas is blown into high temperature and stir simultaneously, within the short period of time, to carry out upgrading blowing step, form by this far infrared radioactivity material, not only environmental protection and energy saving, the far infrared radioactivity material of gained more can increase the industry range of application of molten steel slag and improve its economic worth.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, appended the description of the drawings is as follows:
Fig. 1 illustrates the according to an embodiment of the invention part schema of the manufacture method of far infrared radioactivity material;
Fig. 2 and Fig. 3 show respectively according to the molten steel slag of the embodiment of the invention 1 (Fig. 2) or the XRD analysis result of (Fig. 3) afterwards before the upgrading blowing;
Fig. 4 is the far infrared irradiation rate that shows according to the embodiment of the invention 1 to 3 and reference substance;
Wherein, main element nomenclature:
100: method 101: the collection of molten steel slag is received step
103: upgrading blowing step 105: form the far infrared radioactivity material
401/403/405/407: curve.
Embodiment
Below hash out manufacturing and the use of the embodiment of the invention.Yet, being understandable that, embodiment provides many applicable inventive concepts, and it may be implemented in the certain content miscellaneous.The specific embodiment of discussing for explanation, is not to limit scope of the present invention only.
The present invention herein alleged " far infrared radioactivity material " refers to behind steelmaking process, by the molten steel slag through upgrading and material, and this material is 75 per-cent to 90 per-cents in the average far infrared emission rate of wavelength 4 μ m to 14 μ m.
The manufacture method of above-mentioned far infrared radioactivity material can utilize following method to make.See also Fig. 1, it is to illustrate the according to an embodiment of the invention part schema of the manufacture method of far infrared radioactivity material.In one embodiment, can be behind steelmaking process, shown in step 101, carry out the collection of molten steel slag and receive step, it is the molten steel slag of collecting a large amount of (for example more than 20 tons or 20 tons) outside converter, and wherein this molten steel slag comprises free state calcium oxide (free CaO), free state magnesium oxide (free MgO), silicate (silicate) compound and wustite (ferrite) compound at least.
In an illustration, the main crystalline phase of above-mentioned molten steel slag comprises lime (lime; CaO), ferric oxide (FeO), brownmillerite (brownmillerite; Ca
2(Al, Fe)
2O
5), magnetite (Fe
3O
4), β-Calucium Silicate powder (β-lamite; β-Ca
2SiO
4) etc.
After the collection of molten steel slag is received step 101, directly carry out upgrading blowing step, shown in step 103.The molten steel slag that upgrading blowing step described herein must additionally not received collection heats, and the molten steel slag of collection receipts is also got rid of known technology simultaneously needs to be warming up to 1500 ℃ processing after cooling again.In one embodiment, upgrading blowing step 103 comprises and utilizes one to contain in the molten steel slag that the oxygen carrier gas is blown into 1350 ℃ to 1600 ℃ of temperature an additive.
In an illustration, it is aforesaid that to contain the oxygen carrier gas be air, oxygen or above-mentioned combination, can produce additional thermal energy with the wustite such as the ferric oxide (FeO) of molten steel slag or the reaction of residual molten steel, and then impel additive to be melted in fully in the molten steel slag, to generate required polycrystalline phase silicate or wustite material.Do not contain the oxygen carrier gas if do not use, then can't produce additional thermal energy the molten steel slag is maintained at 1350 ℃ to 1600 ℃, and then affect additive and can't be melted in fully in the molten steel slag.In other illustration, the temperature of aforesaid molten steel slag maintains 1500 ℃ to 1600 ℃, and the average far infrared emission rate of the far infrared radioactivity material of gained can be higher.
In another illustration, aforesaid additive is comprised of earth silicon material, for example: the combination of flying dust, glass waste, useless potter's clay, useless casting sand, sandblast waste material or raw material silica sand, other suitable material or above-mentioned materials.Above-mentioned material all is the waste that other industry produces, and does not comprise above-mentioned earth silicon material material in addition.By the manufacture method of far infrared radioactivity material of the present invention, can solve the processing problem of above-mentioned waste, promote its recycling property, increase economic worth.
Be 100 weight percents based on the molten steel slag, the usage quantity of aforesaid additive is 10 weight percent to 30 weight percents.Only it should be noted that, in upgrading blowing step step 103, if when additive is blown into the molten steel slag, the temperature of molten steel slag is lower than 1350 ℃, and then additive can't be melted in the molten steel slag fully.If the usage quantity when additive is blown into the molten steel slag is lower than 10 weight percents, then may still there be free state calcium oxide or magnesium oxide to exist, to be cooled to room temperature, more likely with aqueous vapor generation hydration reaction, cause the volumetric expansion disintegration.If the usage quantity of additive greater than 30 weight percents, can cause the viscosity of molten steel slag excessively low on the contrary, cause the reactivity of additive and molten steel slag not good.
In addition, in the above-mentioned upgrading blowing step 103, when being blown into additive, can mix additive and molten steel slag, impel additive to be melted in fully in the molten steel slag, to form this far infrared radioactivity material.In an illustration, can utilize flow 10 cubic meters per minute (Nm
3/ min) to 30Nm
3The oxygen carrier gas that contains of/min mixes additive and molten steel slag.In another illustration, additive and molten steel slag can mix 10 minutes to 60 minutes, only with 16 minutes to 20 minutes for better.
In one embodiment, the far infrared radioactivity material of gained is a polycrystalline phase silicate and wustite material compound, and this polycrystalline phase silicate and wustite material comprise maghemite (Fe at least
2O
3) etc. the wustite compounds, but do not have free state calcium oxide and/or free state magnesium oxide.In an illustration, the main crystalline phase of above-mentioned far infrared radioactivity material comprises brownmillerite (brownmillerite; Ca
2(Al, Fe)
2O
5), magnetite (Fe
3O
4), β-Calucium Silicate powder (β-lamite; β-Ca
2SiO
4), wustite (wustite; FeO), rhombohedral iron ore (hematite; Fe
2O
3) etc.Because the polycrystalline phase silicate of above-mentioned gained and the Crystalline phase of wustite compound-material do not have lime (lime; CaO) or periclasite (periclase; MgO), representative can be avoided in the future because of derivative each species problem of hydration swelling in fact by complete stability.
It is worth mentioning that, the manufacture method of far infrared radioactivity material of the present invention is in the situation that need not additionally heat the molten steel slag that collection is received, outside converter, directly carry out upgrading blowing step, with a large amount of (being equal to or greater than 20 tonnes) molten steel slags of (10 minutes to 60 minutes or 16 minutes to 20 minutes) processing within the short period of time.The not only environmental protection and energy saving of the manufacture method of far infrared radioactivity material of the present invention, and the good stability of the polycrystalline phase compound of gained (namely thus, do not have free state calcium oxide and free state magnesium oxide), and its average far infrared emission rate is 75 per-cent to 90 per-cents, and then enlarges its industry and utilize scope and increase economic worth.
Below utilize embodiment so that application of the present invention to be described, so it is not to limit the present invention, and have in the technology of the present invention field and usually know the knowledgeable, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.
Preparation far infrared radioactivity material
Embodiment 1
At first, behind steelmaking process, collect the receipts step, it is to go out clearly molten liquid steel from converter, pours remaining molten steel slag in the stove into inder pot again.In this step, can pour continuously the molten steel slag of several stoves in the inder pot into, every barrel of inder pot can hold the approximately molten steel slag more than 20 tons or 20 tons, and wherein the molten steel slag comprises free state calcium oxide (free CaO), free state magnesium oxide (free MgO), silicate (silicate) or wustite (ferrite) compounds at least.
Then, directly carry out upgrading blowing step, it is to utilize approximately 2.0NM of average discharge
3/ min, pressure is 6.0kg/cm approximately
2Air as containing the oxygen carrier gas, general commercially available silica sand raw material (the silica sand that sheet glass is used; SiO
2Content＞85%, granularity＜0.7mm%, moisture content＜0.5%) additive be blown in the molten steel slag of 1500 ℃ to 1600 ℃ of temperature, and utilize 1Nm
3/ min to 4Nm
3/ min or utilize average approximately 2Nm
3The stir speed (S.S.) of/min mixes silica sand and the molten steel slag reaches 20 minutes.The feeding speed of additive is about 50kg/min to 300kg/min, average approximately 180kg/min.Be 100 weight percents based on the molten steel slag, the usage quantity of above-mentioned commercially available silica sand is 15 weight percents.
At the mid-term stage of upgrading blowing step, when for example upgrading blowing step was carried out 5 minutes to 15 minutes, alternative was blown into oxygen, with average approximately 0.92NM
3The average discharge of/min, 14NM
3The always amount of being blown into, increase by this with ferric oxide (FeO) or the reaction of residual molten steel of molten steel slag and produce extra heat energy, silica sand and molten steel slag are fully reacted.Above-mentioned upgrading blowing step is lasted approximately 16 minutes.Behind naturally cooling, polycrystalline phase compound be can make, and its chemical constitution, crystalline phase composition and far infrared irradiation rate further detected, it detects methods involving, and the details will be described later.
Embodiment 2
Embodiment 2 uses the method identical with embodiment 1 and temperature condition to collect receipts step and the upgrading step that blows.Different is that embodiment 2 uses cullet pellet (mean diameter＜0.7mm; SiO
2＞66%, Al
2O
3＜18%, CaO＜8%, moisture content＜0.5%) as additive, be blown in the molten steel slag of 1350 ℃ to 1500 ℃ of temperature.The feeding speed of additive is about 60～300kg/min.Be 100 weight percents based on the molten steel slag, the usage quantity of above-mentioned commercially available silica sand and cullet piece is 20 weight percents.The upgrading blowing step of embodiment 2 is also utilized average discharge 2.0NM
3/ min, pressure 5.5～7.3kg/cm
2Air as containing the oxygen carrier gas, only at the mid-term stage of upgrading blowing step, when for example upgrading blowing step was carried out 5 minutes to 15 minutes, alternative was blown into oxygen, its average discharge is 2.5～4.0NM
3The average discharge of/min, and always the amount of being blown into is 14～22NM
3Above-mentioned upgrading blowing step is lasted approximately 16～20 minutes.Behind naturally cooling, can make polycrystalline phase silicate and wustite compound and detect its chemical constitution, crystalline phase composition and far infrared irradiation rate.
Embodiment 3
Embodiment 3 uses the method identical with embodiment 1 and temperature condition to collect receipts step and the upgrading step that blows.Different is that embodiment 3 uses silica sand powder (for example, trade(brand)name: silica powder, high A, Jin Jing's silica sand company; Granularity＜0.1mm; SiO
2＞95%, Al
2O
3＜3%, moisture content＜0.5%) as additive, be blown in the molten steel slag of 1350 ℃ to 1500 ℃ of temperature.The feeding speed of additive is about 70kg/min to 250kg/min.Be 100 weight percents based on the molten steel slag, the usage quantity of above-mentioned commercially available silica sand and cullet piece is 15 weight percents.The upgrading blowing step of embodiment 2 is also utilized average discharge 2.0NM
3/ min, pressure 5.5kg/cm
2To 7.3kg/cm
2Air as containing the oxygen carrier gas, only at the mid-term stage of upgrading blowing step, when for example upgrading blowing step was carried out 5 minutes to 15 minutes, alternative was blown into oxygen, its average discharge is 2.5～4.0NM
3The average discharge of/min, and always the amount of being blown into is 14～22NM
3Above-mentioned upgrading blowing step is lasted approximately 16～20 minutes.Behind naturally cooling, can make polycrystalline phase compound.
The usefulness of assessment far infrared radioactivity material
1. chemical constitution
The polycrystalline phase compound of embodiment 1 gained is to utilize commercially available XRF (X-ray Fluorescence; XRF) spectroscopy equipment, for example (SRS 3400 for Xray fluorescence spectrometer (X-ray Fluorescence Spetrometer), Bruker-AXS GmbH) and wet analysis method (wet method), to identify its chemical constitution, its result is as shown in table 1.
Table 1
Can be learnt by table 1, before the upgrading blowing, the molten steel slag of embodiment 1 comprises free state calcium oxide (free CaO), free state magnesium oxide (free MgO), silicate (silicate) or wustite (ferrite) compounds at least.Yet the molten steel slag of embodiment 1 is after the upgrading blowing, and the polycrystalline phase compound of gained comprises rhombohedral iron ore (hematite, Fe at least
2O
3) etc. the wustite compound, but do not have free state calcium oxide and free state magnesium oxide.
2. crystalline phase forms
Secondly, the polycrystalline phase compound of embodiment 1 gained is to utilize commercially available X ray diffraction (X-ray diffraction; XRD) equipment, for example X ray diffractometer (X-ray diffractometer) (D8 Advance, Bruker-AXS GmbH, Germany) forms to identify its crystallization phases (crystalline phases).
See also Fig. 2 and Fig. 3, it is to show respectively according to the molten steel slag of the embodiment of the invention 1 (Fig. 2) or the XRD analysis result of (Fig. 3) afterwards before the upgrading blowing, wherein the transverse axis of Fig. 2 and Fig. 3 is scanning angle (2 θ °), and the longitudinal axis is intensity (per second signal counting; Counts per second, cps), CaO represents lime (lime; CaO) peak value, FeO represent the peak value of ferric oxide (FeO), and B represents brownmillerite (brownmillerite; Ca
2(Al, Fe)
2O
5) peak value, Fe3O4 represents magnetite (Fe
3O
4) peak value, L represents β-Calucium Silicate powder (β-lamite; β-Ca
2SiO
4) peak value, FeO represents wustite (wustite; FeO) peak value, and Fe
2O
3Represent rhombohedral iron ore (hematite; Fe
2O
3) peak value.
By XRD analysis result's demonstration of Fig. 2, the main crystalline phase of molten steel slag before the upgrading blowing comprises lime (lime; CaO), ferric oxide (FeO), brownmillerite (brownmillerite; Ca
2(Al, Fe)
2O
5), magnetite (Fe
3O
4), β-Calucium Silicate powder (β-lamite; β-Ca
2SiO
4) etc.Yet, after the upgrading blowing of molten steel slag through embodiment 1, by the X-ray diffractometer analytical results demonstration of Fig. 3, the molten steel slag after the upgrading blowing is polycrystalline phase silicate and wustite compound, and its main crystalline phase comprises brownmillerite (brownmillerite; Ca
2(Al, Fe)
2O
5), magnetite (Fe
3O
4), β-Calucium Silicate powder (β-lamite; β-Ca
2SiO
4), wustite (wustite; FeO), rhombohedral iron ore (hematite; Fe
2O
3) etc., but do not have lime (lime; CaO) and periclasite (periclase; MgO).Can learn easily behind comparison diagram 2 and Fig. 3, the molten steel slag has not had lime (lime after the upgrading blowing; CaO) (being the free state calcium oxide) and periclasite (being free state magnesium oxide).
3. far infrared irradiation rate
Moreover the polycrystalline phase compound of embodiment 1 to embodiment 3 gained is to utilize fourier transform infrared spectrometer (Fourier transform infrared spectroscopy; FT-IR), VERTEX70FT-IR (Bruker Optik GmbH, Germany) for example, to identify its far infrared irradiation rate, its result is shown in Fig. 4 and table 2.
See also Fig. 4, it is the far infrared irradiation rate that shows according to the embodiment of the invention 1 to 3 and reference substance, and wherein the transverse axis of Fig. 4 is the wavelength (μ m) of far infrared rays, and the longitudinal axis is the far infrared irradiation rate.Generally speaking, far infrared irradiation rate (ε) is the ratio that is defined as sample test piece and blackbody standard sheet, can't represent with effective unit, is generally between 0～1, can calculate according to following formula (I):
Wherein M (T) is that the sample test piece is in 30 ℃ of far infrared irradiation amounts with 40 ℃, M
b(T) then be that the blackbody standard sheet is in 30 ℃ of far infrared irradiation amounts with 40 ℃.
Be that the embodiment of the invention 1 to 3 and reference substance are in the far infrared irradiation rate of specified temp as for table 2, wherein reference substance is BBCH meridian point qi field dark circles flaked product (Chinese Dongguan City cypress is assisted and abdicates grand trading company, the import of TaiWan, China Jiamei trading company).
Table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Reference substance | |
| FIR emissivity (%) (40 ℃) | 90.3 | 75.0 | 76.0 | 85.7 |
Synthesizing map 4 and table 2 can be learnt, the molten steel slag of embodiment 1 to 3 is after the upgrading blowing, the polycrystalline phase silicate of gained and wustite compound are 75 per-cent to 90 per-cents in the average far infrared emission rate of wavelength 4 μ m to 14 μ m, really can reach purpose of the present invention.
Only what this need replenish be, far infrared radioactivity material of the present invention and manufacture method thereof also can be used other molten steel slag, contain the oxygen carrier gas, other additive, other reaction conditions etc. carry out, this by in the technical field of the invention any have know that usually the knowledgeable is known, therefore do not give unnecessary details in addition.
Comprehensive speech, by the invention described above embodiment as can be known, use far infrared radioactivity material of the present invention and manufacture method thereof, after its advantage is to collect a large amount of molten steel slags first outside converter, directly utilize to contain in the molten steel slag that the oxygen carrier gas is blown into additive high temperature and stir simultaneously, within the short period of time, to carry out upgrading blowing step, form by this polycrystalline phase silicate and the wustite compound with far infrared radioactivity, heat up again after also need not to cool off in the situation that need not additionally heat, can make unsettled molten steel slag, form stable polycrystalline phase silicate material, not only environmental protection and energy saving, overcome derivative each species problem of hydration swelling of known steel slag, and the polycrystalline phase silicate of gained and wustite compound have good far infrared irradiation rate, more can be used as the far infrared radioactivity material, increase its industry range of application, improve its economic worth.
Although the present invention discloses as above with embodiment; so it is not to limit the present invention; the persond having ordinary knowledge in the technical field of the present invention; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the scope that claims define.
Claims (8)
1. the manufacture method of a far infrared radioactivity material comprises:
Carry out a collection and receive step, the described receipts step that collects is to collect a molten steel slag outside a converter, and wherein said molten steel slag comprises free state calcium oxide, free state magnesium oxide, silicate compound or wustite compound at least; And
After described collection is received step, directly carry out upgrading blowing step, to form a far infrared radioactivity material, wherein said upgrading blowing step comprises:
Utilize one to contain in the molten steel slag that the oxygen carrier gas is blown into 1350 ℃ to 1600 ℃ of temperature an additive, wherein said additive is comprised of earth silicon material, and be 100 weight percents based on the molten steel slag, the usage quantity of additive is 10 weight percent to 30 weight percents; And
When being blown into this additive, mixed described additive and molten steel slag 10 minutes to 60 minutes, to form the far infrared radioactivity material, wherein said far infrared radioactivity material is a polycrystalline phase silicate and wustite compound, this polycrystalline phase compound comprises at least rhombohedral iron ore but does not have free state calcium oxide and free magnesium, and the average far infrared emission rate of this polycrystalline phase material is 75 per-cent to 90 per-cents.
2. the manufacture method of far infrared radioactivity material as claimed in claim 1, wherein said to contain the oxygen carrier gas be air, oxygen or above-mentioned combination.
3. the manufacture method of far infrared radioactivity material as claimed in claim 1, wherein said earth silicon material are flying dust, glass waste, useless potter's clay, useless casting sand, sandblast waste material, high hearthstone or raw material silica sand.
4. the manufacture method of far infrared radioactivity material as claimed in claim 1 wherein contains the additive utilization in the molten steel slag that the oxygen carrier gas is blown into 1500 ℃ to 1600 ℃ of temperature.
5. the manufacture method of far infrared radioactivity material as claimed in claim 1, wherein said upgrading blowing step is to utilize 1Nm
3/ min to 4Nm
3The stir speed (S.S.) of/min mixes additive and molten steel slag.
6. the manufacture method of far infrared radioactivity material as claimed in claim 1, wherein said upgrading blowing step is to utilize 2Nm
3The stir speed (S.S.) of/min mixes additive and molten steel slag.
7. the manufacture method of far infrared radioactivity material as claimed in claim 1, wherein said additive and molten steel slag are to mix 10 minutes to 30 minutes.
8. far infrared radioactivity material, its be utilize obtained such as the manufacture method of each described far infrared radioactivity material of claim 1 to 7.
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| CN105314896A (en) * | 2014-08-05 | 2016-02-10 | 中国钢铁股份有限公司 | Far infrared material |
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| JPS5919897B2 (en) * | 1979-04-03 | 1984-05-09 | 川崎製鉄株式会社 | Method for reforming converter slag |
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| JP4906348B2 (en) * | 2004-01-21 | 2012-03-28 | 三井金属鉱業株式会社 | Cerium-based abrasive and polishing method thereof |
| JP2005307263A (en) * | 2004-04-21 | 2005-11-04 | Nippon Steel Corp | Method for melting and reforming steelmaking slag |
| US7513929B2 (en) * | 2005-04-01 | 2009-04-07 | Heritage Environmental Services, Llc | Operation of iron oxide recovery furnace for energy savings, volatile metal removal and slag control |
| JP4782764B2 (en) * | 2007-12-13 | 2011-09-28 | 有限会社ウッドメック | Far-infrared radiation plate |
| CN102344288B (en) * | 2010-07-30 | 2013-11-06 | 吴介源 | Method for preparing energy aggregates by sintering with instantly heating up |
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| JPS5388688A (en) * | 1977-01-17 | 1978-08-04 | Nippon Steel Corp | Converter slag modifying method |
| CN1324777A (en) * | 2000-05-23 | 2001-12-05 | 杨杰裕 | Steel slag portland cement producing process with converter slag |
| CN1430586A (en) * | 2000-05-24 | 2003-07-16 | 拉法尔热公司 | Method for oxidising treatment of steel works slag and resulting LD slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105314896A (en) * | 2014-08-05 | 2016-02-10 | 中国钢铁股份有限公司 | Far infrared material |
| CN105314896B (en) * | 2014-08-05 | 2018-11-27 | 中国钢铁股份有限公司 | Far-infrared ray material |
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| TWI561496B (en) | 2016-12-11 |
| JP2013216559A (en) | 2013-10-24 |
| TW201341340A (en) | 2013-10-16 |
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